Exfo EXpert IPTV Test Tools (FTB-200v2) Uživatelský manuál stáhnout pdf (Strana 66)

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A.3 IPTVProtocols

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 IPTVusesamultilayerprotocolstacktodeliverthemediacontents.

 Thefirst3layersaretypicalforIPTVtransmission.

 TheUDP/RTPsessionlayerisresponsiblefortransferringpacketsbetweenthe

senderandthereceiver.

 TheMPEG‐TStransportstreamlayercombinesmultiplemediastreams(video,audio,

data)intoasin

gleprogramtransportstream.

 ThePESlayerassignsvideoandaudiotospecificpacketstreams.

 Theapplicationlayerperformsencodinganddecodingofthevideoandaudiousing

MPEG‐2,MPEG‐4,VC‐1orotherformats.

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Exfo EXpert IPTV Test Tools (FTB-200v2) Uživatelský manuál Strana 66